Moreover, Jack Harkness continued to go through a cycle of death and rebirth, after having been buried alive underneath Cardiff the previous century. He would not escape from his earthen tomb until the early 20th century. (TV: Exit Wounds)

According to the Strange to Tell section of The Dalek World, a Dalek saucer crashed in the Himalayas in the year 141. Finding it difficult to travel over the ice and snow, the Daleks crawled out of their casing and discovered that, because of the rarified atmosphere and sub-zero temperatures, they were able to survive. These Dalek mutants ultimately became known as the legendary Yeti.